CN2726213Y - AC-DC-AC current transformer mutual feedback test system coupled by sub-edge of transformer - Google Patents
AC-DC-AC current transformer mutual feedback test system coupled by sub-edge of transformer Download PDFInfo
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- CN2726213Y CN2726213Y CN 200420042525 CN200420042525U CN2726213Y CN 2726213 Y CN2726213 Y CN 2726213Y CN 200420042525 CN200420042525 CN 200420042525 CN 200420042525 U CN200420042525 U CN 200420042525U CN 2726213 Y CN2726213 Y CN 2726213Y
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Abstract
The utility model discloses an AC-DC-AC current transformer mutual feedback test system coupled by sub-edge of transformer, which is characterized in that the system comprises a step-up transformer circuit connected with the electric network, a traction transformer circuit, a tested AC-DC-AC current transformer, an observing and controlling system and the tested traction motor system of the two coaxial coupled asynchronous frequency speed control motors. Wherein, the step-up transformer circuit outputs 17-31 KV continuous voltages for the test system, after being sent to the traction transformer, the 17-31 KV continuous voltages are divided into two ways and are respectively switched in the two coaxial coupled traction motors. When doing the traction operating condition experiment, the load asynchronous traction motor is driven, dragging the accompanied test asynchronous motor to do generator operation. When doing the damped operating condition experiment, the accompanied test asynchronous motor is driven, driving the tested asynchronous traction motor to do generator operation. Compared with the existing test system, the test system disclosed by the utility model has few energy consumption, extensive test range and strong experiment capability, can satisfies the requirement of large running torque starting and is suitable for various application operating condition tests of locomotives.
Description
Technical field
The utility model relates to the test and the scientific research of Asynchronous Frequency-variable buncher, belongs to by the AC-DC-AC converter of transformer time limit coupling to present pilot system mutually.
Background technology
At present, direct current machine-synchronous generator load feedback pilot system is adopted in domestic alternating-current actuating system test mostly.The employing system with more is, the rotation unit of asynchronous motor-accompany examination DC generator-DC motor-alternating current generator to form, and the feedback of electric energy realizes by alternator generation feedback net.There is following problem: a in this system, the relative asynchronous machine of direct current machine, and rotating speed is lower, and feedback net difficulty during pilot system electric energy low frequency is carried out the alternating-current actuating system test with the direct current unit as load and is had certain limitation; B, the pilot system maintenance workload is big, the operating cost height; C, the operational noise of system height is unfavorable for environmental protection; D, the pilot system floor space is big, and workshop building drops into high.
Summary of the invention
In order to overcome a series of shortcomings of original system, according among the international electrical engineering standard IEC61377 " alternating current motor of electric traction-rolling stock-inverter power supply and the combined test of control system thereof " to the recommendation of the double convertor-asynchronous machine group energy mutual feedback testing program of alternating-current actuating system, inventor's design-build a kind ofly try that scope is wide, test capability is strong, power factor is high, good energy-conserving effect, the AC-DC-AC converter of passing through transformer time limit coupling that dynamic property is good is presented pilot system mutually.
Technical solution of the present utility model is achieved in that a kind of AC-DC-AC converter by the coupling of transformer time limit presents pilot system mutually and comprise the step-up transformer Circuits System that is connected with supply network, the traction transformer circuit, the tested traction electric machine of two Asynchronous Frequency-variable bunchers of tested AC-DC-AC converter circuit, test macro and coaxial connection.Step-up transformer circuit in the described system is made up of step-up transformer TM1 and fine setting transformer TM5, can be the continuous voltage of pilot system output 17～31KV.This output voltage is admitted to traction transformer circuit TM2, secondly the part on limit connects one group of tested AC-DC-AC converter, and by the tested traction motor M1 of output termination of current transformer, another part connects another and organizes tested AC-DC-AC converter and export the tested traction motor M5 of termination by current transformer.Input at every group of current transformer inserts current sensor UA1, UA2, UA3, UA4 and voltage sensor UV1, UV2, UV3, UV4; Output at every group of current transformer then inserts current sensor UA31, UA32, UA33, UA21, UA22, UA23 and voltage sensor UV31, UV32, UV33, UV21, UV22, UV23.The TT﹠C system of pilot system is by these current sensors and voltage sensor, and acquired signal is used to measure the voltage and current of tested traction electric machine M5.
The pilot system that the utility model provides has less energy consumption than the synchronous generator loading back-to-back testing of existing direct current one system, can try scope factory, test capability is strong, be suitable for being tested the test that object carries out various operating modes, possesses good test load characteristic, the speed adjustable range and the permanent merit scope that can well adapt to tested drive system broadness can satisfy big torque starting requirement simultaneously.Thereby can provide traction or brake torque with tested system support at interior four corner containing low speed segment, satisfy the test of the various utilization operating modes of locomotive.
Description of drawings
The utility model provides accompanying drawing one width of cloth, wherein:
Fig. 1 is for presenting the schematic circuit of pilot system mutually by the AC-DC-AC converter of transformer time limit coupling.
Among the figure: 1, step-up transformer 2, traction transformer 3, tested AC-DC-AC converter 4, tested traction electric machine M1 5, another organizes tested AC-DC-AC converter 6, tested traction electric machine M5
Embodiment
As shown in the figure, the power supply that uses of this system is industrial electrical network three-phase main-frequency 6.3kV power supply.
Behind the power supply process inlet master switch 1AH, enter general supply metering device 2AH.
General supply metering device 2AH is mainly used to the whole loop of metering experiment total voltage, electric current, active power, power factor etc.
An electric network source phase wherein enters tested current transformer link through circuit breaker 4AH.Through tap changer TK and step-up transformer TM11, step-up transformer TM1 can export 17kV, 22.5kV, 25kV, 29kV, five grades of voltages of 31kV, pass through voltage trim transformer TM5 again, make the continuous voltage of power supply output 17～31kV, satisfy the needs of test.Power detector 5AH is used to provide voltage synchronizing signal and current measurement signal.The voltage of 17～31kV is sent into traction transformer TM22.
The part on TM22 limit of traction transformer connects one group of tested AC-DC-AC converter 3, and current transformer 3 outputs meet tested traction motor M14.Input side in tested AC-DC-AC converter 3 is connected to current sensor UA1, UA2, and voltage sensor UV1, UV2 are used to measure the voltage and current of input.Outlet side in tested AC-DC-AC converter 3 is connected to current sensor UA31, UA32, UA33, and voltage sensor UV31, UV32, UV33 are used to measure the voltage and current of tested traction motor M14.
The another part on TM22 limit of traction transformer connects another and organizes tested AC-DC-AC converter 5, and current transformer 5 outputs meet tested traction motor M56.Input side in tested AC-DC-AC converter 5 is connected to current sensor UA3, UA4, and voltage sensor UV3, UV4 are used to measure the voltage and current of input.Outlet side in tested AC-DC-AC converter 5 is connected to current sensor UA21, UA22, UA23, and voltage sensor UV21, UV22, UV23 are used to measure the voltage and current of tested traction motor M56.
During pulling test, electric energy is delivered to one group of tested current transformer 3 by main transformer time limit, supply with tested asynchronous traction motor 4 through the three-phase alternating current that this tested current transformer 3 is transformed to voltage, frequency adjustable, the examination asynchronous machine 6 of accompanying that tested asynchronous traction motor 4 drags coaxial connection moves.The three-phase alternating current of accompanying examination asynchronous machine 6 to send tries current transformer 5 (or claiming to accompany trial work industry current transformer) feedback grid through accompanying.During braking test, is that the three-phase alternating current of voltage, frequency adjustable drives and accompanies 6 operations of examination asynchronous machine by accompanying examination current transformer 5 (or claiming to accompany trial work industry current transformer) with transformation of electrical energy, accompany examination asynchronous machine 6 to drag the tested asynchronous traction motor 4 of coaxial connection, at this moment tested asynchronous traction motor 4 is as generator operation, and the three-phase alternating current that is sent is through tested current transformer feedback grid.
In this test, two current transformers also can adopt identical current transformer, realize complete back-to-back test's working method.Save the electric energy that absorbs from electrical network effectively.
Claims (5)
1, a kind of AC-DC-AC converter by transformer time limit coupling is presented pilot system mutually, it is characterized in that this system comprises the step-up transformer circuit (1) that is connected with electrical network, traction transformer circuit (2), tested AC-DC-AC converter circuit (3), the tested traction electric machine and the connection line thereof of two Asynchronous Frequency-variable bunchers (4,6) of TT﹠C system and coaxial connection are formed.
2, the AC-DC-AC converter by transformer time limit coupling according to claim 1 is presented pilot system mutually, it is characterized in that the step-up transformer circuit is made up of step-up transformer TM1 and fine setting transformer TM5, is the continuous voltage that pilot system is exported 17～31KV.
3, the AC-DC-AC converter by transformer time limit coupling according to claim 1 is presented pilot system mutually, the inferior limit branch that it is characterized in that traction transformer circuit (2) is made two parts, a part wherein connects one group of tested AC-DC-AC converter (3), and its output meets tested traction motor M1 (4); Another part connects another and organizes tested AC-DC-AC converter (5), and its output meets tested traction motor M5 (6).
4, the AC-DC-AC converter by transformer time limit coupling according to claim 1 is presented pilot system mutually, and its feature is that also the input of AC-DC-AC converter circuit (3) and output are connected to current sensor UA1, UA2, UA3, UA4 and UA21, UA22, UA23 and voltage sensor UV1, UV2, UV3, UV4 and UV21, UV22, UV23 and UV31, UV32, UV33 respectively.
5, the AC-DC-AC converter by transformer time limit coupling according to claim 1 is presented pilot system mutually, it is characterized in that test macro passes through aforementioned currents transducer and voltage sensor difference acquired signal, is used to measure the voltage and current of tested traction motor M1 and M5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420042525 CN2726213Y (en) | 2004-04-06 | 2004-04-06 | AC-DC-AC current transformer mutual feedback test system coupled by sub-edge of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420042525 CN2726213Y (en) | 2004-04-06 | 2004-04-06 | AC-DC-AC current transformer mutual feedback test system coupled by sub-edge of transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2726213Y true CN2726213Y (en) | 2005-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420042525 Expired - Fee Related CN2726213Y (en) | 2004-04-06 | 2004-04-06 | AC-DC-AC current transformer mutual feedback test system coupled by sub-edge of transformer |
Country Status (1)
| Country | Link |
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| CN (1) | CN2726213Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101141112B (en) * | 2007-10-16 | 2010-10-06 | 中国北车股份有限公司大连电力牵引研发中心 | Common DC bus based multi-frequency converter system for vessel |
| CN101210941B (en) * | 2006-12-30 | 2011-07-13 | 许继集团有限公司 | Large power converter subsequent lockout overcurrent, subsequent power loss and overcurrent test method |
| CN101738553B (en) * | 2009-12-25 | 2011-08-31 | 三一电气有限责任公司 | Universal testing system of frequency transformer and current transformer |
| CN102621408A (en) * | 2011-10-20 | 2012-08-01 | 无锡清源电气科技有限公司 | Test system and test method of general converter product |
| CN101661071B (en) * | 2009-09-25 | 2013-05-29 | 中国北车集团大连机车车辆有限公司 | Test method of micro-power inverter |
-
2004
- 2004-04-06 CN CN 200420042525 patent/CN2726213Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101210941B (en) * | 2006-12-30 | 2011-07-13 | 许继集团有限公司 | Large power converter subsequent lockout overcurrent, subsequent power loss and overcurrent test method |
| CN101141112B (en) * | 2007-10-16 | 2010-10-06 | 中国北车股份有限公司大连电力牵引研发中心 | Common DC bus based multi-frequency converter system for vessel |
| CN101661071B (en) * | 2009-09-25 | 2013-05-29 | 中国北车集团大连机车车辆有限公司 | Test method of micro-power inverter |
| CN101738553B (en) * | 2009-12-25 | 2011-08-31 | 三一电气有限责任公司 | Universal testing system of frequency transformer and current transformer |
| CN102621408A (en) * | 2011-10-20 | 2012-08-01 | 无锡清源电气科技有限公司 | Test system and test method of general converter product |
| CN102621408B (en) * | 2011-10-20 | 2015-04-22 | 无锡清源电气科技有限公司 | Test system and test method of general converter product |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: NORTH CHINA CO. Free format text: FORMER OWNER: XIE BUMING Effective date: 20080905 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080905 Address after: Beijing City, Fengtai District Fong City Park District building 15, zip code: 100076 Patentee after: China CNR Corporation Limited Address before: R & D center of Dalian Dalian Rolling Stock Co., Ltd. (No. 51 The Strip in sandy area, Liaoning), postcode: 116022 Patentee before: Xie Buming |
|
| ASS | Succession or assignment of patent right |
Owner name: CHINA CNR CORPORATION LIMITED DALIAN ELECTRIC TRAC Free format text: FORMER OWNER: NORTH CHINA CO. Effective date: 20090417 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090417 Address after: No. 51, middle The Strip, Shahekou District, Liaoning, Dalian Province, China: 116022 Patentee after: Dalian Electric Traction Research & Development Center of China North Locomotive Co., Ltd. Address before: Beijing City, Fengtai District Fong City Park District building 15, zip code: 100076 Patentee before: China CNR Corporation Limited |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050914 |